Spaced hull arrangement for sailboats



Feb- 12, 1952 v. c. TcHETcHET 2,585,599

SPACED HULL ARRANGEMENT FOR SAILBOATS Filed NOV. 23. 1945 3 SheetS-Sheei l 2O F|G-4AO 2 I l, 4 62 f Ka A 76 7 mylar I /22/2 24J INVENTOR ATTORN EY VCTOR CT CHER/7157 Feb. 12, 1952 v C, TCHETCHET 2,585,599

SPACED HULL ARRANGEMENT FIOR SAILBOATS Filed Nov. 23, 1945 3 Sheets-Sheet 2 VCTOR @12b/5701157 INVENTOR ATTO R N EY Feb' 12, 1952 v. c. TcHE'Tcl-u-:T 2,585,599

SPACED HULL ARRANGEMENT FOR SAILBOATS Filed Nov. 25, 1945 5 Sheets-Sheet. 5

A INVENTOR Mcm/P CY TCHETCHET ATTORNEY Patented Feb. 12, 1952 UNirEofsT-Arss eA-TENT AOFFICE.

sPAoED HULL ARRANGEMENT, non' sAILBoArs *.Victor C.TchetcheGreatiNech N.`Y.

ApplicationNovember 23,1945, Serial No. 630,160

` 4Claims.

1 .I l My invention Vrelates to racing boats ,and -has :particular reference to racing "sailboats,

-It has for -its object" to `p-rovidean extremely fast racing boat which will be substantiallyv non- A lcapsizable and "non-sinkable.

An lallied object ofmy invention4` is -`to -provide aracing Vboat so constructed'that itcan be easily disassembledyfor shipment or storage.

yThese and other objects `and advantages --are Aobtaineitl yin my invention ley-providingv a-main l-l1u'-1l"ofvery `high speed characteristics, rwith additional pontoons; also Vdesigned. for A#high speed.l

In another form `of my invention Ieliminate lthev'central hull, having instead two spaced hulls vconnected by suitable boards or bars, on which a cockpit can be built.

'In either case, I provide thepontoons, or the hulls, with inclined' converging bottoms, preferably of `an asymmetrical form, which .design greatly increases tendency of the boat to swing to Windward, as will be more fully v explained hereinafter.

The foregoing and other objects,features and -f-advantages of my inventionare-morefully described in i the accompanying specication fand Idrawings -infwhich two modied-embodiments'of my invention Aare disclosed, `by way--of illustration:

Fig. 1 is aschematic front viewlo'oneembo'di- -ment of my inventionl in which threehulls-iare qused;

'.Figfz is a detail View of van.arrarigementr'ffor -rsecuringcross beams to pontoons;

Fig. f3 is a similar viewof anothertype offthe `cross beam and its attachment;

Fig. 3A is a view of a modified attachment; `FigfEBis a detail side view ofnthe same; i-'Fig r1i is `a top plan view of aboatshownvin "Fig 1;

Fig. 4Ais adetailview of across plank shown in Fig. 4;

:Eig 4B is a similar detail viewofrai-.modication;

Fig. 5 is an elevational view ofthe same;

Fig 6 isa schematic front .l vewnofeanother embodiment of my invention lin-w`nich two hulls Vare used;

.iFigf'' is a top planview of 'the.same;

Fign is an elevationalview rvofr the :.same;

Fig.;9 .is `a detail view of` aziolding zwheeluattachment Fig. 10 is a top plan View of ftheeame; .Fig.` 1l is .an elevational view of a modified boat having fourzpontoons;

'Y 45 v#and Aconsequently :the total friction.

2 "Fign12 is atop plan view-of the same; Fig `13 is afractional detail view of amodified "attachment vof a pontoon.

My sailboat is 'an embodiment Ashown lin- Figs.

At the Cross beams y 4 can upper deckwoi `the main hull.

`rlhe brackets-6 'are provided :Crossbeams can 4be made of wood boards 4 as -shownin'Figx `The `boards are provided with angle irons` llsecured to the ends of brackets tta," 6a by bolts H with wing nuts. Sitting boards 18 are'fastened to the cross beams 4. ,A

Awoodencross plank may be provided if desired. r4Brackets' are substantially longer than the Ylira'ckets so that fthe pontoons are inclined Ldownwardly and outwardly as shown. Urllhebot- "toms-S of the pontoons are'further inclined up- .wardlyA and outwardly. vTo yprevent'the vessel ^from"burying thebow when going before the .wingpontoons are placed forward as shown in "Fig 4.

The inclinedbottoms Aand asymmetrical de- Signtend toincrease the pressure of water from 'theleeward thusbringing the vessel automaticallyto the Windward. kThis is a very important factor in sailing.

""The tendencyof the boat toriswing tol the wind- Ward isfiurther increased .by toeing in the ponitoonsas jshown in Fig. 4. Inaddition to the jfor egoing features, `both pontoons vare mounted higher...at .theirmbowsas shown inFig. 5 to lpro- .vide.aplaning action, thus .decreasing the sub- .,mersion lof lthe :leeward pontoon, thereby also decreasing .the .amount of the wetted surface,

.'lmncrease ,the ,maneuverability of the vessel,

@if necessary, twosmall rudders i9 are provided aonvthe bows Yof' the vpontoons, operated by cables 1. 24 y simultaneously-fwithy the, :main vrudder I 4 at V`thelstern -of thegmain hull,the main rudder I4 -pleferably-folding,gbeing operated by a tiller 2l `4connected'ito',the rudder by a rod 20. With this :arrangement-,thezworking surfaces ofv all three -;:rudders=fexertlpressureon the'extreme ends of the bow and stern levers. 25 is shown in dotted lines.

The main hull is provided with a lee board 1, pivoted at l and sliding in a slotted bracket 8. Revolving raked mast l2 is posted on the cross plank and supports the main sail l and jib Il.

The pontoons may be provided with hatches 22 for Ventilating purposes and in case of leak to facilitate the pumping. A suitable coaming 23 may be provided on the main hull I if desired.

The main hull and the pontoons are built in conformity with the lines of the least resistance. I have found that good results are obtained when the main hull has the length-beam ratio from about 1:10 to 1:14, and the pontoons from about 1:10 to 1:18. The lines of thebow of the main hull are ilared and have wide spray board to prevent the vessel from burying when going before the wind.

The brackets may be provided with a suitable mechanism for raising or lowering the pontoons in accordance with the load (number of persons aboard, for instance) and condition of the sea.

Such a detachable pontoon is shown in Figs. 3A and 3B. The pontoon 2 is provided with posts 65 with flanges or tongues 66 in which slide brackets 61, 6l joined at the top by a brace 68. The braces are provided with holes 69 for bolts 'I0 which make it possible to adjust the height of the pontoons. The upper end of the bracket 61 has an opening for the plank 4 and is bolted at 12 to a bracket 13. The bracket 61 has also an opening for the plank 4 and is provided with a lip H engaging the end of the plank 4.

The adjustment of the pontoons is useful to take care of the added weight, for instance, or of the particular weather condition. Thus in a choppy sea it is desirable to lower the pontoons all the way down, or all theway up, according to the height of the waves, to avoid slipping,-

The boat can be conveniently made amphibious by adding collapsible landing gear as shown in Figs. 9 and 10. The wheels 30, which can be of a pneumatic type, are supported in forkshaped brackets 3l pivoted at 32 to cross beams. The brackets are normally folded as shown in dotted lines in Fig. 9 but can be opened for moving the boat on a solid ground. -In the opened or operative position the bracket 30 is An underdeck tiller held in its position by hooks 33 engaging eyes. 34 on the pontoon 2, with additional hooks 35 engaging eyes 36 on the bracket 6.

The pontoons and the rudder can be replaced with steel runners for converting the craft into an ice boat.

The entire construction may be readily dismantled in a matter of minutes by disconnecting pontoons from the cross planks (or pipes) and cross planks from the main hull. The rigging may be detached by disconnecting snap hooks at shrouds and stays. Fig. 4A shows a quick detachable mounting for planks 4, which is clamped by an arm 6U pivoted at 6| on a post 62n and held by a wing bolt 63 on ak second post 64. The hull l is attached to the rod 4 by a clamp 'l5 hinged at 16 and held by a wing nut 11.

My boat can be also built with two hulls as shown in Figs. 6 to 8 inclusive. The hulls 40, 4I are provided with outward inclined inboard surfaces and inclined bottoms 39, being similar in this respect to the pontoons of the modification shown in Fig. 1. The hulls support a cockpit 42 with passenger seat 43 arranged around the cockpit. A tiller 44 is provided at the rear of the cockpit on a post 38 with control cables 45 extending from the arms 46 to rudders 41 with folding portions 48 in the Sterns of the hulls 40,41. A streamlined revolving mast 50 is mounted in the cockpit, with a headstay 5l and shrouds 52. Metal braces 53 extend between the hulls under the cockpit for a centerboard 54 supported between the braces on pivot bolts 55. The centerboard can be raised or lowered by suitably arranged ropes (not shown) operated from the cockpit, the braces 53 being pivotally supported on the hulls by pivot bolts 56.

In larger sizes of the boat the hulls can be made with cabins, lavatories, galleys, etc.

The boat may be provided with four pontoons 2 as shown in Figs. 1l and l2. Two pontoons can be mounted over one side only, a single pontoon being on the other side. The pontoons can be secured to short pipes 86 attached to planks 8| extending from the main hull.

It will be understood that various features and principles of each of the embodiments of the invention above described or referred to may be utilized or substituted in the other embodiments.

While the invention has been described in detail with respect to certain particular preferred examples, it will be understood by those skilled in the art after understanding the invention, that various changes and further modifications mayy be made without departing from the spirit and scope of the invention, and it is intended therefore in the appended claims to cover all such changes and modifications.

What is claimed as new and desired to be secured by Letters Patent is:

l. A boat comprising two side hulls in spaced relation to each other; a main hull positioned centrally between the side hulls; cross beams secured to the main hull at their middle portions; means to support the ends of the cross beams on the side hulls, the bottoms of the side hulls being inclined with the outer edges of the hulls at a higher elevation than the inner edges; and means to adjust the height of the side hulls relative to the height of the main hull.

2. A boat comprising two side hulls in spaced relation to each other, each said side hull including sides and a bottom; a main hull positioned centrally between said side hulls; the bot- -toms of said side hulls being inclined with the outer edges thereof at a higher elevation than the edges adjacent the main hull and the sides of said side hulls adjacent the main hull being inclined downwardly and outwardly with respect to said bottoms; beams extending outwardly from said main hull and positioned in spaced apart fore and aft relation at their outer ends and brackets adjacent said outer ends and interconnecting said beams and said side hulls and of a length to maintain said beams and said side hulls in spaced relationship, the bottom surface of each of said side hulls being inclined downwardly from the forward to the after end thereof.

3. In a boat defined in claim 2 said brackets being formed for lengthwise adjustment and means securing each of said brackets in adjusted position whereby the inclination of said side hulls can be pre-set to meet sailing conditions.

4. In a boat as defined in claim 2 the sides of said side hulls remote from said main hull curving outwardly from the forward end thereof to generally amidships and curving back inwardly from said amidships position to the after end of said side hull.

VICTOR C. TCHETCHET. (References on following page) 5 REFERENCES CITED Number The following references are of record in the 068,618 le of this patent: UNITED STATES PATENTS 344,619 Number Name Date 189,459 Herreshof Apr. 10, 1877 551,367 Cremer Dec, 17, 1895 Number 996,444 Yarrington June 27, 1911 473,895 1,720,698 Stager July 16, 1929` 1l) 636,630 1,748,252 Sundstedt Feb. 25, 1930 '735,040

Name Date Wilford Jan 19, 1937y McIntyre Jan. 25, 1938 Dornier Feb. 16, 1943 Lake Mar. 21, 1944 FOREIGN PATENTS Country Date France Jan. 28, 1915 France Apr. 13, 1928 France Feb. 1, 1935 

